2-(Pyridinium-1-yl)-1,1-bis(perfluoroalkylsulfonyl)ethan-1-ide: A Practical Reagent for Synthesis of Strongly Acidic 1,1-Bis(perfluoroalkylsulfonyl)alkanes
By mixing (RfSO2)2CH2 (Rf = perfluoroalkyl), paraformaldehyde, and substituted pyridines, a three-component reaction proceeded smoothly to give unusual zwitterions bearing both pyridinium and stabilized carbanion moieties in good to excellent yields. Of these, 2-fluoropyridinium derivatives rapidly dissociated in acetonitrile to give equilibrium mixtures of the zwitterions and (RfSO2)2C=CH2/2-fluoropyridine
Phenyliodonium bis(perfluoroalkane sulphonyl) methide; synthesis and reactions as a precursor of bis(perfluoroalkanesulphonyl) carbene
作者:Shi-Zheng Zhu、Qing-Yun Chen
DOI:10.1039/c39900001459
日期:——
Photoreaction of the title compound Phl+–C(RFSO2)2 which was synthesised by the reaction of bis(perfluoroalkanesulphonyl) methane with diacetoxyiodobenzene, with alkene, methanol, bromine and benzene gave corresponding addition or insertion products, via the bis(perfluoroalkanesulphonyl) carbene, (RFSO2)2C: intermediate.
标题化合物腓的光反应+ - C(R ˚F SO 2)2,其通过双(perfluoroalkanesulphonyl)甲烷与diacetoxyiodobenzene的反应合成的,具有烯烃,甲醇,溴和苯获得对应添加或插入的产品,通过该双(全氟链烷磺酰基)卡宾,(R F SO 2)2 C:中间体。
A new synthetic route to aryl bis(perfluoroalkanesulfonyl) methanes; structures of tolyldiazonium bis(trifluoromethanesulfonyl)methide and 4-nitrophenyl-hydrazono bis(trifluoromethanesulfonyl)methane
作者:Shi-Zheng Zhu
DOI:10.1016/s0022-1139(00)80062-7
日期:1993.9
Aryl bis(perfluoroalkanesulfonyl)methanes have been prepared in high yield by the pyrolysisof arenediazonium bis(perfluoroalkanesulfonyl)methides obtained from the reaction ofarenediazonium chlorides with potassium bis(perfluoroalkanesulfonyl)methides. Heatingp-nitrophenyldiazonium bis(trifluoromethanesulphonyl)methide resulted in a rearrangementto 4-nitrophenylhydrazono bis(trifluoromethanesulfonyl)methane
Synthesis and Reactions of 1-Aryl-2,2-bis(perfluoroalkanesulfonyl)ethylenes
作者:Shi-Zheng Zhu
DOI:10.1055/s-1994-25454
日期:——
The title compounds 3 were prepared by condensation of bis (perfluoroalkanesulfonyl)methanes 1 with aromatic aldehydes in high yields. Reactions of 3 with pyridine and dimethyl phosphite were studied.